I smashed my ganglion cyst with a book. Should the pain have gone away by now?

First you smashed. Your wrist or hand with a book so that hurts. Ganglions dont typically hurt by themselves. While a big soft large ganglion on the back of the wrist that has been ruptured before may respond to hitting with a book in genreal it is not the recommended treatment. Usuay those that are broken easily with a book come back soon but break easily. You dont give a time frame or location or size so icant say.
Soon. Pain usually subsides in 2-3 days unless wrist was bruised by blow then probably 3-4 days.